Diagram Design plugin for Codex
Architecture, architecture delta, IT current-state, flowchart, sequence, state machine, ER/data model, timeline, swimlane, quadrant, radar/spider, polar, loop, nested, tree, org chart, layer stack, exploded/plan, Venn, pyramid/funnel, bar, waterfall, treemap, heatmap, line, Gantt, scatter, high-level, process, medallion, data flow, DP integration, DP security matrix, Sankey, fishbone, Wardley map, kanban, journey, deployment, dependency, blueprint, UML class, story map, schema, lifecycle phase.
How to install Diagram Design in Codex
1. Add the repo as a Codex plugin marketplace:
codex plugin marketplace add cathrynlavery/diagram-design2. Install the plugin from it:
codex plugin add diagram-design@diagram-designThis repo ships a Codex marketplace file (.agents/plugins/marketplace.json). The first command adds it as a marketplace (Codex CLI reference); the second installs the plugin 'diagram-design'. 'diagram-design' is the marketplace name from that file. Check the repo README too. Command format: Codex CLI reference.
What it contains
Plugins in this marketplace (1)
diagram-design— Architecture, architecture delta, IT current-state, flowchart, sequence, state machine, ER/data model, timeline, swimlane, quadrant, radar/spider, polar, loop, nested, tree, org chart, layer stack, exploded/plan, Venn, pyramid/funnel, bar, waterfall…
Example prompts from the manifest
- Make an architecture diagram of my app.
- Create a flowchart for this decision process.
- Redraw this Mermaid diagram at the right size and detail level.
About this listing
Diagram Design is a community plugin on GitHub by cathrynlavery. Its README documents a Codex install and the repo ships a Codex plugin manifest. It passed the CodexStacks quality filter for repos found this way (at least 500 stars, pushed in the last 90 days, not a fork or a list). OpenAI hasn't reviewed it and we haven't tested it. From its files we found 1 plugin. The manifest says version 2.6.107. It's one of 36 listings in the Creativity category. It also appears in best Codex plugins for design and UI, best Codex plugins for deployment and hosting, best Codex plugins for security.
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Diagram Design FAQ
How do I install Diagram Design in Codex?
Add the repo as a Codex plugin marketplace with codex plugin marketplace add cathrynlavery/diagram-design, then install it with codex plugin add diagram-design@diagram-design. Commands: the command format from the Codex CLI reference; check the repo README too.
Is Diagram Design an official Codex plugin?
No. Diagram Design is a community repo on GitHub by cathrynlavery. It passed the CodexStacks quality filter, but OpenAI hasn't reviewed it and we haven't tested it, so read the code before you install it.
What does Diagram Design include?
From its manifest and repo files, Diagram Design includes 1 plugin: diagram-design.
Details
- Type
- Plugin
- Category
- Creativity
- Source
- Community
- Author
- Cathryn Lavery
- Version
- 2.6.107
- License
- MIT
- GitHub stars
- 56,295 (at last sync)
- Last push
- 2026-10-16
- Manifest
.agents/plugins/marketplace.json- GitHub topics
- agent-skills, claude-code, data-visualization, diagrams, drawio, mermaid, svg
- Source
- https://github.com/cathrynlavery/diagram-design
- Website
- https://diagramdesign.dev
- Listed via
- GitHub search: README documents a Codex install
- Tested by CodexStacks
- Not yet
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For maintainers: badge and embeds
Maintain Diagram Design? Add the badge; it links to this page.
Markdown
[](https://codexstacks.com/p/diagram-design/)HTML
<a href="https://codexstacks.com/p/diagram-design/"><img src="https://codexstacks.com/badge.svg" alt="Listed on CodexStacks" width="172" height="28"></a>Embed card (static HTML and inline CSS, no JavaScript). Preview:
<a href="https://codexstacks.com/p/diagram-design/" style="display:block;max-width:380px;box-sizing:border-box;padding:14px 16px;border:1px solid #3a2c26;border-radius:12px;background:#0d0b0a;color:#f3ece6;font:14px/1.45 -apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;text-decoration:none"><span style="display:block;font-size:16px;font-weight:700;color:#f3ece6">Diagram Design</span><span style="display:block;margin:2px 0 8px;font-size:12px;color:#b5a9a1">Community Codex plugin · 1 plugin</span><span style="display:block;margin:0 0 10px;color:#ddd3cc">Architecture, architecture delta, IT current-state, flowchart, sequence, state machine, ER/data model, timeline…</span><span style="font-size:12px;font-weight:600;color:#ffb347">View on CodexStacks →</span></a>Markdown summary
**[Diagram Design on CodexStacks](https://codexstacks.com/p/diagram-design/)**: Community Codex plugin with 1 plugin.More on badges, embeds and keeping your listing up to date: CodexStacks for plugin authors.
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